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Configuration Examples
In many cases, an IP-enabled server configures the IP settings via DHCP for all
workstations. In networks in which the IP settings are made manually, you have to
enter the corresponding IP settings in the OpenCom 100 Configurator (Network:
LAN menu). Additionally you should change the DHCP server to static address
assignment (in the Network: DHCP menu) to enable the OpenCom 100, for
example to configure connected VoIP system telephones. In certain cases you
have to restrict the DHCP function of the IP-enabled server to ignore the MAC
addresses for such terminals.
Dynamic Address Assignment for Specific Devices
In addition to the static address assignment, you can also use dynamic address
assignment if you limit dynamic assignment to specific devices. You can use this
e.g. to easily configure VoIP devices because you do not need to assign a fixed IP
address during setup.
1. Call up the Network: DHCP page. Click Change.
2. In the Status selection, change to the Dynamic address assignment or to the
Dynamic and static address assignment setting.
3. In the Devices selection, change to the with configured MAC only setting.
For SIP system telephones (Aastra 673xi and Aastra 675xi), it is also possible to
omit the configuration of the MAC address (see Aastra 673xi/675xi DHCP
starting on page 124). In the Devices selection, change to the with configured
MAC only and SIP system devices setting. Please note, that you also need to
exclude from the configuration of an external DHCP server all MAC addresses
starting with 00:08:5D.
4. Confirm with Apply.
By activating the limitation to specific devices, only known devices can get a DHCP
answer. For this, the IP address is taken from the address range used for dynamic
address allocation. If you setup a new VoIP device, it is sufficient to enter only the
MAC address.
OpenCom 100 in a LAN with an IP-enabled Server
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